Diaphragm-pump.



w. M. EBERLY.

DIAPHRAGM PUMP- APPLlCATlON FILED MAY 26. 1916.

Patented Mar. 20, 1917.

WILLIAM M. EBERLY, F SHIPPENSBURG, PENNSYLVANIA, ASSIGNOR T0 DOMESTIC ENGINE & PUMP 00., .OF :31: PENNSYLVANIA. I

emma.

Specification of Letters Patent.

Patented Man-20, 1917.

Application filed May 26, 1916. Serial No. 99,948. v

To all whom it may concern:

Be. it known that I, WILLIAM M. EBERLY, a citizen of the United States, and resident of Shippensburg, in the county of Cumberland and State of Pennsylvania, have invented certain new and useful Improvements in Diaphragm-Pumps, of which the following is a specification.

My invention relates to improvements in dia hragm pumps, and has for an object to ena lo the valve to be free to move relatively to its seat in a direct line away therefrom, whereby advantage of the full area of the discharge opening may be attained without restriction, and whereby also lodgment of particles of foreign matter at or adjacent to the valve, to interfere with its operation are prevented, thereby enabling the valve to close roperly upon its seat.

A urther object of the invention is to provide means for guiding the valve that is carried by the diaphragm in suchmanner that the valve will e free toopen andclose seat in a substantially tiltmg as is customary with hinged valves used in diaphragm pumps.

My invention further comprises novel details of improvement and combinations of parts that will be more fully hereinafter set forth and then pointed out in the-claims.

Reference is to be had to the accompanying drawing in which the figure is a vertical section of a diaphragm pump embodying my invention.

The numerals 1 and 2 indicate respectively the upper and lower sections of the pump casing, between which the edge portion of a diaphragm 3 are clamped in an ordinary or wellknown manner. At 1 is an inlet communicating with the lower section 2 for admission of the liquidto be pumped. An annular valve seat 5 is secured in register with the aperture 3 valve seat and ring being clamped together upon the diaphragm I have shown guiding posts or studs 7 spaced apart at opposite sides of the valve seat and threaded at the lower ends to work in threaded apertures in ring 6, the valve seat being shown provided with apertures 8 receiving said posts or studs which also pass through the diaphragm, nuts 9 upon the studs or serving to clamp the parts 3, 5, 6 and seof diaphra 3 a ring 6 being shown below the dii p hragm, said osts curely together, whereby the seat and diaphragm may be raised and lowered for pumping. A yoke 10 secured to the posts or studs 7 keeps the latter braced, and serves as means for operating the parts. At 11 is a valve, shown in the form of a disk, which is movable freely toward and from seat 5. Valve 11 is shown clamped between upper and lower members 12, 13, ,by means of bolt 14 passing through said parts. Valve 11 is not hinged or pivoted at one side of seat 5 as in wellknown diaphragm pumps, but is guided to move bodily freely up and down with respect to. seat 5. For such purposegl have shown a cross bar 15 connected with the valve, as by being held upon the upper memthe bolt 14, which bar 15 is prober 12 by vided with apertures 16 freely receiving the posts or studs 7, whereby the valve 11 is freely guided torise and fall and is retained in proper position relatively to seat 5.

In. order to give the diaphragm a substan-' tially straight lift, or up and down motion, I rovide a walking beam 17, which is pivotal y supported at 18 upon the casing, and pivotally connected at' 19 with a link 20 that-is secured to yoke 10 by nuts, link 20 playing freely in an opening in the top member 21 of the casing. Power may be applied at the free end of member 17 in any suitable manner, and as the walking beam is rocked the diaphragm will be raised and lowered in a manner tending to a direct movement more or less in the line of its axis,as distinguished from an angular or twisting movement frequently'given diaphragms in this class of umps. By this means the diaphragm may e raised and lowered to a greater extent without injury thereto than with ordinary diaphragms, thereby gaining the advantage of greatly increasing the suction and making positive delivery of an increased amount of water and increasing the life and durability of the diaphragm.

In accordance with my improvements the valve 11 is adapted to rise from its seat equally and freely at all points when-the diaphram is lowered, thereby quickly opening the passage between-the valve and 1ts seat and givingan extra large discharge area, the

guiding bar 15 serving to retain the valve approximately in aihorizontal position, so that when the valve seat is raised with the diaphragm the valve will close quickly and uniformly thereon all around. This form' of valve also affords the advantages of closing tightly to its seat at all points, and there is no place for lodgment of foreign particles adjacent to the valve, such as at the hinges of valves usually provided in diaphragm pumps, which particles have a tendency to prevent the valve from closing properly, all foreign matter being readilvcarried through between the valve and its seat by the rush of water at the discharge in accordance with my improvements.

My improved pump is particularly adapted'for pumping muddy water, or water containing stones and other foreign matter, since it aflords the least obstruction between the seat and valve to such flow, because the valve is free to rise straight up from the seat to provide a wide area unobstructed in any direction, permitting the discharge of water and foreign particles freely and quickly all around the seat and beneath the valve.

Since the valve 11 is securely clamped between the disk-like members 12 and 13,-the upper of which extends over the valve and over the seat and the lower of which may pass within the seat, said valve may be made of pure rubber, affording long life and secure closing of the valve on the seat, and not being liable to injury from contact with flowing particles of foreign matter.

Having now described my invention what I claim is 1. A diaphragm pump comprising a casing provided with an apertured diaphragm, a valve seat secured to the diaphragm, a valve opposed to the seat, and means located above the valve and its seat to guide the valve for free bodily movement relatively to the seat to provide an unobstructed passage all aroundbetween the valve and seat.

2. A diaphragm pump comprising a casing provided with an apertured diaphragm, a valve seat secured to the diaphragm, a valve opposed to the seat, and means spaced without the seat and slidably coactive with the valve to guide and retain the valve in all its positions to permit the latter to rise bodily from the seat to provide an unobstructed discharge passage between the seat and valve in all positions of the latter.

with the diaphragm and spaced on opposite sides of and free from the seat, and a guiding bar connected with the valve and slidably receiving said posts, whereby the valve is guided to move bodily away from the seat to provide an unobstructed discharge passage between the seat and valve in all positions of the latter.

4. A diaphragm pump comprising a casing provided with an apertured diaphragm, a valve seat secured to the diaphragm, a valve opposed to the seat, means to guide the valve for free bodily movement relatively to the seat to provide an unobstructed passage all around between the valve and seat, a Walking beam pivotally supported relatively to the casing, and a link pivotally connected with the walking beam and connected with the diaphragm.

5. A diaphragm pump comprising a casing provided with an apertured diaphragm, a valve seat connected with the diaphragm, a valve for said seat, posts connected with said diaphragm, a yoke connecting the posts, means on the valve co-active with said posts to guide the valve with respect to said seat, a walking beam pivotally supported upon the casing, and a link pivotally connected with the walking beam and connected to said yoke.

6. A diaphragm pump comprising a casing provided with an apertured diaphragm, a valve seat connected with the diaphragm, a valve for said seat, posts connected with said diaphragm, a yoke'connecting the posts, a rod securedto the valve and having apertures slidably receiving said posts, a walking beam pivotally supported upon the casing, and a link pivotally connected with the walking beam and connected to said yoke.

Signed at Shippensburg, in the county of Cumberland, and State of Pennsylvania this 22d day of May, A. D. 1916.

WILLIAM M. EBERLY.

Witness:

' EMILY J. HAMILTON. 

